Steps to pull an engin on a 1650?

cleon001 · #1 05-12-2012, 04:47 PM

Pulling the engine on a 1650 to replace a cracked oil pan. I have never done this before. I took the front grill, hood and headlights off, gas tank and have disconnected all the wiring, including the choke and throttle cable. But now i am wondering how does one get the drive shaft disconnected from the engine? I see the 4 bolts that go through the flexible rubber disk. I have taken all the nuts of the bolts but the bolts cannot come out due to not enough space between the engine and the flexible rubber disk the bolts go through. Do I have to undo the other end of the shaft under the tunnel cover that goes into the back of hydro transmission area? Any advise and guidance is appreciated.

Thanks

Cleon

cavmedic · #2 05-12-2012, 05:14 PM

There should be 4 bolts on the bottom of the oil pan that mount the engine to the cradle ... The cradle is then mounted to the frame with the iso mounts.

At least that is how it was for my 1450

_DX3_ · #3 05-12-2012, 06:10 PM

Quote:

Originally Posted by cleon001

Pulling the engine on a 1650 to replace a cracked oil pan. I have never done this before. I took the front grill, hood and headlights off, gas tank and have disconnected all the wiring, including the choke and throttle cable. But now i am wondering how does one get the drive shaft disconnected from the engine? I see the 4 bolts that go through the flexible rubber disk. I have taken all the nuts of the bolts but the bolts cannot come out due to not enough space between the engine and the flexible rubber disk the bolts go through. Do I have to undo the other end of the shaft under the tunnel cover that goes into the back of hydro transmission area? Any advise and guidance is appreciated.

Thanks

Cleon

I would never try to do something on these cubs without a manual. We have many manuals in our Tractor library. Here is one you need at the moment:
http://ccmanuals.info/pdf/1x8-9%20&%...e%20Manual.pdf

cleon001 · #4 05-13-2012, 12:49 AM

Thanks for the reply cavmedic and DX3. I see how the engine has the 4 bolts on the bottom of the oil pan that mount the engine to the cradle and the ISO Mounts that mount the cradle to the frame but I still have not found out how to disconnect the drive shaft from the engine. I see the 4 bolts that go through the flexible rubber disk and I have removed the nuts on those bolts. But the bolts cannot come out as they are too close to the engine to remove. Checking the manual DX3 provided page 1-7 states "Disconnect the drive shaft front felxible couple from the engine" but does not give any details on how to do that. The picture that accompanies it points to two of the four bolts with a caption that says "Discconect here". Yet the picture at the top of page 1-7 shows absoltuly no trace of the drive shaft. How does one disconnect the engine from the drive shaft? Does this happen if I slide the engine forward as I remove it after unbolting it from the 4 bolts in the oil pan? How is this suppose to be done? Any advise and guidance is appreciated.

Thanks

Cleon

CADplans · #5 05-13-2012, 05:20 AM

Quote:

Originally Posted by cleon001

Thanks for the reply cavmedic and DX3. I see how the engine has the 4 bolts on the bottom of the oil pan that mount the engine to the cradle and the ISO Mounts that mount the cradle to the frame but I still have not found out how to disconnect the drive shaft from the engine. I see the 4 bolts that go through the flexible rubber disk and I have removed the nuts on those bolts. But the bolts cannot come out as they are too close to the engine to remove. Checking the manual DX3 provided page 1-7 states "Disconnect the drive shaft front felxible couple from the engine" but does not give any details on how to do that. The picture that accompanies it points to two of the four bolts with a caption that says "Discconect here". Yet the picture at the top of page 1-7 shows absoltuly no trace of the drive shaft. How does one disconnect the engine from the drive shaft? Does this happen if I slide the engine forward as I remove it after unbolting it from the 4 bolts in the oil pan? How is this suppose to be done? Any advise and guidance is appreciated.

Thanks

Cleon

Yep, you are right, just 2 bolts and slide the engine forward.

You got one of these??

I hope you add one of these!!

cleon001 · #6 05-13-2012, 11:33 AM

Thanks CADplans. Just want to make sure I do this the right way. Yes I do have a cracked oil pan and yes I do plan on implementing the cradle fix.
As I read more and see where the ISO mounts are on 1650 should I plan on putting the new cradle and ISO mounts in first and then place the engine with the new oil pan into the cradle that is already attached to the frame? Looking at how things are layed out this seems to make the most sense but I have never done this before so figured I better ask.

Thanks,

Cleon

Methos · #7 05-13-2012, 12:10 PM

Quote:

Originally Posted by cleon001

Thanks CADplans. Just want to make sure I do this the right way. Yes I do have a cracked oil pan and yes I do plan on implementing the cradle fix.
As I read more and see where the ISO mounts are on 1650 should I plan on putting the new cradle and ISO mounts in first and then place the engine with the new oil pan into the cradle that is already attached to the frame? Looking at how things are layed out this seems to make the most sense but I have never done this before so figured I better ask.

Thanks,

Cleon

Cleon, here's the guide from the tech section of the site.

http://www.onlycubcadets.net/forum/s...ead.php?t=4630

CADplans · #8 05-13-2012, 01:52 PM

That tech section is basically what I did, with one exception.

I used the oil pan alone, without the engine bolted to it.

I put the oil pan on the cradle to make sure all 4 corners touched.

I did some shimming/tweaking to make sure the assembly did not start out with the motor being twisted when the engine mounting bolts were tightened.

Maybe belts and suspenders, but, I feel better.

Who knows what twisting/torquing the frame has been subjected to over the last 40 years!!??